Maddi St John
type: MusicGroup
popularity: 5
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc6b6507cec916cdc8b45accab1b96e728b2eeca298511e1f38acf464203e781
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcc6b6507cec916cdc8b45accab1b96e728b2eeca298511e1f38acf464203e781","name":"Maddi St John","registered_at":"2026-06-20T11:21:20Z","symbol":"NIM1601561","token_address":"0x501a910f6390a04eb0a7969b83675725f4aeb68a","type":"artist","uuid":"af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6b6507cec916cdc8b45accab1b96e728b2eeca298511e1f38acf464203e781. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d.json and https://artists.proofprofile.net/proofs/artist/af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xcc6b6507cec916cdc8b45accab1b96e728b2eeca298511e1f38acf464203e781","name":"Maddi St John","registered_at":"2026-06-20T11:21:20Z","symbol":"NIM1601561","token_address":"0x501a910f6390a04eb0a7969b83675725f4aeb68a","type":"artist","uuid":"af4b86f2-11a7-45a3-a3a6-58ae5b6fe18d"}